<template>
    <div>
        <!--面包屑导航-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图-->
        <el-card >
            <!-- 搜索与添加-->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUsersList">
                        <el-button slot="append" icon="el-icon-search" @click="getUsersList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加</el-button>
                </el-col>
            </el-row>
            <!--用户列表区域-->
            <el-table :data="userList" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <!-- 作用域插槽-->
                    <template slot-scope="scope">
                        <!--{{scope.row}}-->
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button size="mini" type="warning" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域-->
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1,2,5,10]"
                    :page-size="queryInfo.pagesize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>

        </el-card>

        <!--添加用户的对话框-->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 内容主体区域-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
              <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
              </el-form-item>
                <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
              </el-form-item>
                <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
              </el-form-item>
            </el-form>

            <!-- 底部按钮-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible=false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户的对话框-->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email" ></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile" ></el-input>
                </el-form-item>

            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!--分配角色的对话框-->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
              <div>
                  <p>当前用户:{{userInfo.username}}</p>
                  <p>当前角色:{{userInfo.role_name}}</p>
                  <p>分配新角色：
                      <el-select v-model="selectedRoleId" placeholder="请选择">
                          <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
                      </el-select>
                  </p>
              </div>
              <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
              </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        data(){
            //自定义两个校验规则---校验邮箱和手机号
            var checkEmail=(rule,value,callback)=>{
               const regEmail=/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
                if(regEmail.test(value)){
                //    合法
                    return callback()
                }else{
                    callback (new Error('请输入合法的邮箱!'))
                }
            }
            var checkMobile=(rule,value,callback)=>{
                const regMobile=/^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
                if(regMobile.test(value)){
                    //合法
                    return callback()
                }else{
                    callback (new Error('请输入合法的手机号!'))
                }
            }

            return{
                // 获取用户列表的参数对象
                queryInfo:{
                    query:'',
                    pagenum:1,//当前页数
                    pagesize:2//当前每页显示多少条数据
                },
                userList:[],
                //全部数据的个数,
                total:0,
                //控制添加用户对话框的显示和隐藏
                addDialogVisible:false,
                //添加用户的表单数据
                addForm: {
                    username:'',
                    password:'',
                    email:'',
                    mobile:''
                },
                //添加表单的验证规则对象
                addFormRules:{
                    username:[
                        {required:true,message:"请输入用户名",trigger:'blur'},
                        {min:2,max:10,message:"用户名长度在2~10个字符之间",trigger: 'blur'}
                    ],
                    password:[
                        {required:true,message:"请输入密码",trigger:'blur'},
                        {min:6,max:15,message:"密码长度在6~15个字符之间",trigger:'blur'}
                    ],
                    email:[
                        {required:true,message:"请输入邮箱",trigger:'blur'},
                        {validator:checkEmail,trigger:'blur'}
                    ],
                    mobile:[
                        {required:true,message:"请输入手机号码",trigger:'blur'},
                        {validator:checkMobile,trigger: 'blur'}
                    ]
                },
                //控制修改用户对话框的显示与隐藏
                editDialogVisible:false,
                //查询到的用户信息对象
                editForm:{},
                //修改用户表单的验证规则
                editFormRules:{
                    email:[
                        {required:true,message:"请输入邮箱",trigger:'blur'},
                        {validator:checkEmail,trigger:'blur'}
                    ],
                    mobile:[
                        {required:true,message:"请输入手机号码",trigger:'blur'},
                        {validator:checkMobile,trigger: 'blur'}
                    ]
                },
                //控制分配角色对话框的显示与隐藏
                setRoleDialogVisible:false,
                //需要被分配角色的用户信息
                userInfo:{},
                //所有角色的数据列表
                rolesList:[],
                //已选中的角色id值
                selectedRoleId:''

            }
        },
        created(){
            this.getUsersList();
        },
        methods:{
            //向服务器请求数据
            async getUsersList(){
                const {data:res}=await this.$http.get('users',{params:this.queryInfo})
                if (res.meta.status !== 200){
                    return this.$message.error('获取用户列表失败!');
                }
                this.userList=res.data.users;
                this.total=res.data.total;
                // console.log(res)
            },
            //监听 pageSize改变的事件
            handleSizeChange(newSize){
                // console.log(newSize);
                this.queryInfo.pagesize=newSize;
                this.getUsersList();
            },
            //监听 页码值 改变的事件
            handleCurrentChange(newPage){
                // console.log(newPage)
                this.queryInfo.pagenum=newPage;
                this.getUsersList();
            },
            //监听 Switch 开关状态的改变
            async userStateChanged(userInfo){
                // console.log(userInfo)
                const {data:res}=await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`);
                if(res.meta.status !== 200){
                    userInfo.mg_state=!userInfo.mg_state;
                    return this.$message.error('更新用户状态失败!');
                }
            },
            //监听 对话框 关闭事件
            addDialogClosed(){
                this.$refs.addFormRef.resetFields();
            },
            //点击确定按钮,添加用户
            addUser(){
                this.$refs.addFormRef.validate(async (valid) =>{
                    if(!valid) return
                    //可以发起添加用户的网络请求
                    const {data:res}=await this.$http.post('users',this.addForm);
                    if(res.meta.status !== 201){
                        this.$message.error('添加用户失败!');
                    }else{
                        this.$message.success('添加用户成功!');
                        this.addDialogVisible=false;
                        this.getUsersList();
                    }
                })
            },
            //展示编辑用户的对话框
            async showEditDialog(id){
                const {data:res}=await this.$http.get('users/'+id)
                if(res.meta.status !==200){
                    return this.$message.error('查询用户信息失败!');
                }
                this.editForm=res.data;
                this.editDialogVisible=true;
            },
            //监听修改用户对话框的关闭事件
            editDialogClosed(){
                this.$refs.editFormRef.resetFields();
            },
            //修改用户信息并提交
            editUserInfo(){
                this.$refs.editFormRef.validate(async (valid)=>{
                    if(!valid) return
                     //    发起用户请求
                   const {data:res} =await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})

                    if(res.meta.status !==200){
                        return this.$http.error('更新用户信息失败!');
                    }else{
                        //关闭对话框
                        this.editDialogVisible=false;
                        //刷新数据列表
                        this.getUsersList();
                        //提示修改成功
                        this.$message.success('更新用户信息成功!');
                    }
                })
            },
            //根据id删除用户
            async removeUserById(userId){
                // console.log(userId)
                const confirmRes=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch( err => err)

                //如果用户确认删除,返回'confirm'
                //如果用户取消删除,返回'cancel'
                if(confirmRes !== 'confirm'){
                    return this.$message.info('已取消删除!')
                }else{
                    //发送请求 删除用户
                    const {data:res}=await this.$http.delete('users/'+userId);
                    if(res.meta.status !== 200){
                        return this.$message.error('删除用户失败!');

                    }else{
                        this.$message.success('删除用户成功!');
                        this.getUsersList();
                    }
                }


            },
            //展示分配角色的对话框
            async setRole(userInfo){
                this.userInfo=userInfo;

                //展示对话框之前，获取所有角色列表
                const {data:res}=await this.$http.get('roles');
                if(res.meta.status!==200){
                    return this.$message.error('获取角色列表失败！');
                }else{
                    this.rolesList=res.data;
                }


                this.setRoleDialogVisible=true
            },
            //点击按钮，分配角色
            async saveRoleInfo(){
                if(!this.selectedRoleId){
                    return this.$message.error('请选择要分配的角色！')
                }else{
                    const {data:res}=await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId});
                    if(res.meta.status!==200){
                        return this.$message.error('更新角色失败！');
                    }else{
                        this.$message.success('更新角色成功！');
                        this.getUsersList();
                        this.setRoleDialogVisible=false;
                    }
                }
            },
            //监听分配角色对话框的关闭
            setRoleDialogClosed(){
                this.selectedRoleId='';
                this.userInfo={};
            }

        }

    }
</script>

<style scoped>
.el-table{
    margin-top: 15px;
    font-size: 12px;
}
.el-pagination{
    margin-top: 15px;
}
</style>
